This book, by Bill Holder, discusses the ""Lost Fighter"" turbojet and turboprop propulsion systems of the exciting jet fighter era in the United States since the mid-1940s. Until now, very little has been published about these fascinating fighter activities that, for a variety of reasons, did not reach fruition. Covering fighters that did not reach beyond an artist's concept stage, to those that were cancelled after an evaluation of flight capabilities, to others that were cast aside after losing a fly-off competition, this book makes use of previously unpublished, primary-source material. It provides a coherent picture of U.S. jet fighter development and evolution. This book also includes hundreds of photos, drawings, and illustrations of the many ""Lost Fighters.